General Relativity

General Relativity- A theory invented by Albert Einstein which describes gravitational forces in terms of the curvature in space caused by the presence of mass. The fundamental principle of general relativity asserts that accelerated reference frames and reference frames in gravitation fields are equivalent. General relativity states that clocks run slower in strong gravitational fields (or highly accelerated frames), predicting a gravitational redshift. It also predicts the existence of gravitational lensing, gravitational waves, gravitomagnetism, the Lense-Thirring effect, and relativistic precession of orbiting bodies.

( http://www-history.mcs.st-andrews.ac.uk/history/HistTopics/General_relativity.html)

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